I looked a few pages back for something similar so forgive me if I'm bringing up something that is happening a lot. There are times when I can receive or make a call and when that call is over I go to hang up and my screen it totally Black and all no button will bring it back up.. I usually have to wait for the other party to hang up or if there is a recording on the other end it could be awhile before the screen will show any life.. this has been going on a couple months or four. Can anyone verify this dame behavior? I know of two that do this, mine and my business partners both bought on launch day..